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  • Question

  • A dielectric is subjected to alternating field. The dielectric losses are potential to


  • Options
  • A. real part of dielectric constant
  • B. imaginary part of dielectric constant
  • C. both real and imaginary parts of dielectric constant
  • D. either real or imaginary part of dielectric constant

  • Correct Answer
  • imaginary part of dielectric constant 

    Explanation
    Absorption of energy is proportional to imaginary part of complex dielectric constant.

    Materials and Components problems

    Search Results

    • 1. The spin angular momentum along a given direction is either or .

    • Options
    • A. True
    • B. False
      • Discuss
    • 2. The equation D = ?0?r E refers only to isotropic materials.

    • Options
    • A. True
    • B. False
      • Discuss
    • 3. Lines of magnetic field cannot intersect.

    • Options
    • A. True
    • B. False
      • Discuss
    • 4. Assertion (A): Diamond and carborudum are both very hard materials.

      Reason (R): Valence band can be extremely strong.


    • Options
    • A. Both A and R are true and R is correct explanation of A
    • B. Both A and R are true but R is not correct explanation of A
    • C. A is true but R is false
    • D. A is false but R is true
      • Discuss
    • 5. If there are no permanent dipoles in a dielectric material, the dielectric constant is independent of temperature.

    • Options
    • A. True
    • B. False
      • Discuss
    • 6. The number of tightly bound electrons in silicon atom are

    • Options
    • A. 14
    • B. 10
    • C. 6
    • D. 4
      • Discuss
    • 7. Electric dipole moment is usually expressed in debye units. Here, 1 debye unit equals

    • Options
    • A. 3.33 x 10-30 C-m
    • B. 3.33 x 10-30 C-m2
    • C. 3.30 x 10-10 C-m
    • D. 3.33 x 10-10 C-m2
      • Discuss
    • 8. An electron (charge -e) is rotating in a circular orbit of radius R, around a proton with charge +e at a constant angular velocity ?. The orbital magnetic dipole moment is

    • Options
    • A. 0.5 e? R2
    • B. e? R2
    • C. 2 e? R2
    • D. 0.5 e? R3
      • Discuss
    • 9. The dielectrics having only one kind of atoms are known as elemental dielectrics.

    • Options
    • A. True
    • B. False
      • Discuss
    • 10. A circular sphere mile is the area of cross-section of a wire

    • Options
    • A. having a diameter equal to 1 miles
    • B. having a radius equal to 1 miles
    • C. having a circumference equal to 1 miles
    • D. none of the above
      • Discuss

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